Model : [211814-M20248]adidas Springblade Razor Boys' Grade School Vivid Berry/Metallic Silver/Solar SlimeFeaturing 18 innovative TPU polymer blades, the Springblade Razor powers your step by providing explosive energy with every stride. How is this possible? As you run, each blade traps energy as you step down and releases it on rebound, using stored energy for an explosive performance.